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Pregled bibliografske jedinice broj: 329480

Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol


Kveder, Marina; Merunka, Dalibor; Jokić, Milan; Rakvin, Boris
Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol // Physical Review B, 77 (2008), 9; 094202-1 doi:10.1103/PhysRevB.77.094202 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 329480 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol

Autori
Kveder, Marina ; Merunka, Dalibor ; Jokić, Milan ; Rakvin, Boris

Izvornik
Physical Review B (1098-0121) 77 (2008), 9; 094202-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
EPR; ethanol glass

Sažetak
X-band electron paramagnetic resonance (EPR) spectroscopy was used to study the spectral properties of a nitroxide spin probe in ethanol glass and crystalline ethanol, at 5 – 11.5 K. The different anisotropy of molecular packing in the two host matrices was evidenced by different rigid limit values for maximal hyperfine splitting in the signal of the spin probe. The significantly shorter phase memory time, , for the spin probe dissolved in crystalline ethanol, as compared to ethanol glass, was discussed in terms of contribution from spectral diffusion. The effect of low-frequency dynamics was manifested in the temperature dependence of and in the difference between the data measured at different spectral positions. This phenomenon was addressed within the framework of the slow-motional isotropic diffusion model [S. Lee, and S. Z. Tang, Phys. Rev. B 31, 1308 (1985)] predicting the spin probe dynamics within the millisecond range, at very low temperatures. The shorter spin-lattice relaxation time of the spin probe in ethanol glass was interpreted in terms of enhanced energy exchange between the spin system and the lattice in the glass matrix due to boson peak excitations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Biologija



POVEZANOST RADA


Projekti:
098-0982904-2912 - Samo-udruživanje u gelovima i sinteza funkcionalnih hibridnih materijala (Frkanec, Leo, MZOS ) ( POIROT)
098-0982915-2939 - Molekulska struktura i dinamika sustava s paramagnetskim česticama (Ilakovac-Kveder, Marina, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Poveznice na cjeloviti tekst rada:

doi

Citiraj ovu publikaciju:

Kveder, Marina; Merunka, Dalibor; Jokić, Milan; Rakvin, Boris
Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol // Physical Review B, 77 (2008), 9; 094202-1 doi:10.1103/PhysRevB.77.094202 (međunarodna recenzija, članak, znanstveni)
Kveder, M., Merunka, D., Jokić, M. & Rakvin, B. (2008) Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol. Physical Review B, 77 (9), 094202-1 doi:10.1103/PhysRevB.77.094202.
@article{article, author = {Kveder, Marina and Merunka, Dalibor and Joki\'{c}, Milan and Rakvin, Boris}, year = {2008}, pages = {094202-1-094202-6}, DOI = {10.1103/PhysRevB.77.094202}, keywords = {EPR, ethanol glass}, journal = {Physical Review B}, doi = {10.1103/PhysRevB.77.094202}, volume = {77}, number = {9}, issn = {1098-0121}, title = {Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol}, keyword = {EPR, ethanol glass} }
@article{article, author = {Kveder, Marina and Merunka, Dalibor and Joki\'{c}, Milan and Rakvin, Boris}, year = {2008}, pages = {094202-1-094202-6}, DOI = {10.1103/PhysRevB.77.094202}, keywords = {EPR, ethanol glass}, journal = {Physical Review B}, doi = {10.1103/PhysRevB.77.094202}, volume = {77}, number = {9}, issn = {1098-0121}, title = {Low temperature electron-spin relaxation in the crystalline and glassy states of solid ethanol}, keyword = {EPR, ethanol glass} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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